Regional Centro-Oeste Senior O50 STD 2025
7 players participated in this 5-round tournament, held from 26 Jun 2025 to 29 Jun 2025 in Goiania GO, Brazil. Top 10 Elo average was 1861, and top seed was Paulo Santanna (🇧🇷 BRA, 2022).
Jairo Franca Junior (🇧🇷 BRA, 1902) won with 4.0/5, ahead of Raimundo Nascimento Felix (3.0) and Paulo Santanna (2.0). Franca Junior led wire-to-wire.
The biggest upset came in round 3: Jairo Franca Junior (1902) beat Paulo Santanna (2022), a +120-point gap.
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How it unfolded
Top 6 · 5 roundsJairo Franca Junior led from R1; +1.0-point edge over the runner-up.
Jairo Franca Junior never relinquished the lead after R1; final gap +1.0 over the runner-up.
Jairo Franca Junior drew with Raimundo Nascimento Felix (Black).
Jairo Franca Junior won 3 in a row (R1–R3).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Jairo Franca Junior | * | ½ | 1 | — |
| 2Raimundo Nascimento Felix | ½ | * | ½ | ½ |
| 3Paulo Santanna | 0 | ½ | * | — |
| 4Claudio Santos Sergio | — | ½ | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Franca Junior, Jairo | 1902 | BRA | +6B | +5N | +3B | =2N | =7B | 4.0 | 7.0 | 7.5 | 5.75 | 2064 | +20.2 |
| 2 | Felix, Raimundo Nascimento | 1897 | BRA | =3N | =4B | +6N | =1B | =5B | 3.0 | 8.5 | 9.5 | 5.25 | 1961 | +9.4 |
| 3 | Santanna, Paulo | 2022 | BRA | =2B | +7N | −1N | F | =6B | 2.0 | 8.5 | 8.5 | 2.50 | 1787 | -22.2 |
| 4 | Sergio, Claudio Santos | 2006 | BRA | F | =2N | +5B | F | F | 1.5 | 5.5 | 5.5 | 2.50 | 2069 | +3.0 |
| 5 | Pires, Washington Gabriel | 1854 | BRA | F | −1B | −4N | =6B | =2N | 1.0 | 10.0 | 11.0 | 2.00 | 1673 | -18.4 |
| 6 | Olivo, Anibal Ribeiro | 1660 | BRA | −1N | F | −2B | =5N | =3N | 1.0 | 10.0 | 10.0 | 1.50 | 1726 | +5.0 |
| 7 | Hitiro Matsunaga, Pedro | 1687 | BRA | F | −3B | F | F | =1N | 0.5 | 7.5 | 7.5 | 2.00 | 1770 | +3.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Franca Junior, JairoBRA+20.24.0 pts · #1
- 2Felix, Raimundo NascimentoBRA+9.43.0 pts · #2
- 3Olivo, Anibal RibeiroBRA+5.01.0 pts · #5
- 1Santanna, PauloBRA-22.22.0 pts · #3
- 2Pires, Washington GabrielBRA-18.41.0 pts · #6
- 3Sergio, Claudio SantosBRA3.01.5 pts · #4
- R3+120 Elo gap